Public cloud services refer to computing resources and applications that are made available to the general public over the internet. These services are provided by third-party companies, such as Amazon Web Services, Microsoft Azure, and Google Cloud Platform, allowing users to access storage, processing power, and software without needing to invest in physical infrastructure. Users can pay for these services on a subscription or pay-as-you-go basis, making them cost-effective for businesses and individuals. Public cloud services are scalable, meaning users can easily adjust their resources based on demand, and they often come with built-in security features to protect data.